/*
 * Copyright (C) 2021 Huawei Device Co., Ltd.
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 */

package com.example.zhpan.bannerviewpager.adapter;

import ohos.agp.components.BaseItemProvider;
import ohos.agp.components.Component;
import ohos.agp.components.ComponentContainer;
import ohos.agp.components.LayoutScatter;
import ohos.app.Context;

import java.util.List;

/**
 * ImageLoaderInterface
 *
 * @param <T>
 * @since 2021-03-24
 */
public abstract class ListAdapter<T> extends BaseItemProvider {
    private List<T> data;
    private Context ct;
    private int itemId;

    /**
     * ListAdapter
     *
     * @param ct 參數
     * @param itemId 參數
     * @param data 參數
     */
    public ListAdapter(Context ct, int itemId, List<T> data) {
        this.data = data;
        this.ct = ct;
        this.itemId = itemId;
    }

    /**
     * convert
     *
     * @param viewHolder 參數
     * @param item 參數
     * @param position 參數
     */
    public abstract void convert(ViewHolder viewHolder, T item, int position);

    @Override
    public int getCount() {
        return data == null ? 0 : data.size();
    }

    @Override
    public T getItem(int i1) {
        return data.get(i1);
    }

    @Override
    public long getItemId(int i1) {
        return i1;
    }

    @Override
    public Component getComponent(int i1, Component component, ComponentContainer componentContainer) {
        ViewHolder viewHolder = null;
        if (component == null) {
            Component itemView = LayoutScatter.getInstance(ct).parse(itemId, componentContainer, false);
            viewHolder = new ViewHolder(ct, itemView, componentContainer, i1);
            viewHolder.layoutId = itemId;
        } else {
            Object object = component.getTag();
            if (object instanceof ViewHolder) {
                viewHolder = (ViewHolder) object;
                viewHolder.position = i1;
            }
        }
        convert(viewHolder, getItem(i1), i1);
        return viewHolder == null ? null : viewHolder.getComponentView();
    }
}
